Continuous filtration, cleaning and sanitization are not enough – balancing pH (potential hydrogen) is vital. Chlorination should keep germs and algae at bay but when pH is unbalanced, it can’t do its job. Let the pH drop too low and the water becomes acidic and attacks anything it touches. When pH drifts up, the water becomes alkaline and creates an environment where mineral deposits (scale) can form.
Furthermore, when pH is high, chlorine becomes less oRP (oxidation reduction potential) measures the oxidizing capacity in water. it is a proven measurement and maintenance technology mandated for commercial pool sanitization.
unlike most home-test processes, oRP is not fooled by the effects of pH, total Dissolved Solids (tDS) and other factors. most home-test kits and strips only report free chlorine and other less effective forms of chlorine. only oRP can deliver further detailed analysis of the more important free chlorine. it differentiates free chlorine’s components HoCl (hypochlorous acid) and oCi- (hypochlorite ion). oCi- is a slow-acting sanitizer, and HoCl is up to 300 times more effective. oRP targets HoCl, a more fine-tuned measurement of the effectiveness of chlorine and water quality.
Studies have reported on the relationship between oRP and chlorine’s activity with germs and bacteria. they’ve concluded that oRP significantly predicts water bacterial quality better than other methods. As a result, in most states, the highly regulated commercial pool industry requires oRP testing.

WHAT IS BALANCED WATER?

Water balance is composed of several key factors – pH, total alkalinity, calcium hardness and tDS. All of these factors are important, but none more so than pH. pH is a measurement of the concentration of hydrogen ions in water. it is measured using a logarithmic scale from 0 to 14, with pH 7 being neutral.
For pool water to be in balance, all factors must be in their proper range. that range may vary slightly depending on the finish of the pool and the average temperature of the pool water. the one value that never changes is pH. it must be maintained between 7.2 and 7.8 for a pool to be considered “balanced.”

HOW TO ACHIEVE BALANCED WATER?

Achieving optimal water quality can be time consuming and frustrating. most pool owners test their water daily and add the chemicals required to get and keep the water clean and in balance. Get it wrong, and you could swing the balance the other way, increasing your maintenance time and causing unnecessary chemical costs.

WHAT IF?
What if your pool could self adjust, automatically test its own chemistry, and balance and sanitize your water? What if it always knew what the water needed and adjusted
continuously, eliminating unhealthy highs and lows? ensuring brilliant, balanced water all the time, automatically. you can get your water and maintenance time in balance with Sense.

this professional-grade oRP and pH Sense and Dispense technology was previously only available for commercial pools. Hayward now offers an economical approach, with the same level of accuracy, for residential pools. unlike others on the market, Sense and Dispense uses a proportional feed algorithm that continuously tests the water, sampling pH and sanitizer activity, and adjusting chemical feeding on a basis proportional to the demand. other approaches don’t sample the water often enough and release larger doses, which is far less effective and can create highs and lows similar to a manual approach.
Adding Sense and Dispense to your Pro Logic®*, Aqua Plus® or Aqua Rite® Pro is a fully integrated solution – not an additional box that resides on your pool pad – eliminating additional installation costs. it also provides a single source for status reporting and control.
Sense and Dispense consists of two kits. the first kit senses pH and oRP levels and dispenses a self-renewing supply of pure chlorine generated from salt. pH dispense can be achieved using the second kit, which includes a manifold that connects to a Co2 tank. Co2 is highly effective in lowering pH. With salt-chlorinated pools, pH tends to drift up. Co2 reduces pH to recommended levels by forming H2Co3 (carbonic acid), a safe acid that does not require handling. As an alternative to Co2, Sense and Dispense also supports the Stenner Pump acid feed system – a proven solution and approach to chemical delivery. it’s robust, safe and reliable.

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